Loose-nailing machine.



s. A; DOBYNE.

LOOSE N AILING MACHINE APPLIOA'IION FILED NOV. 21, 1910.

1,026,024. Patented May 14, 1912.

5 SHEETS-SHEET 1.

s A. DOBYNE; LOOSE NAILING MACHINE.

APPLICATION FILED NOV. 21, 1910. 1,026,024. Patented May 14, 1912.

5 SHEETS-SHEET 2.

Sr A. DOBYNE.-

LOOSE NAIL-1N1} MACHINE.

APPLICATION FILED 11017221, 1910.

1vv026,024. I *PatentedMay14,19 12.

. 5 SHEETS-SHEET s1 2 1 eases: gln Dental-S s. A YDOBYNBL LOOSE NAILING MACHINE.

APPLIOATION FILED NOV. 21, 1910, 1,026,024.

Patented May 14, 1912.

- Q 5 SHEETS-SHEET 4. F rQ. 81 2 '99 l J 192 l I 84,

i .l 8 86 i S. A. DOBYNE. LOOSE NAILING MACHINE. APPLIOATION FILED NOV. 21, 1010.

Patented May 14, 1912.

5 SHEETS-SHEET 5.

, UNITED STATES PATENT OFFICE.

s'rEPnEN A. DOBYNE, on ST. LOUIS, MISSOURI, assienoa TO summon anon m- CHINERY COMPANY. or sr. LOUIS, MISSOURI, A conronarron on m'xssoum.

Loose-MAILING MACHINE.

I Specification of Letters ma.

Application filed November 21, 1910. Serial No. 593,330.

Patented May 14, 1912.

scribed in an application of J. B. Flint,

Serial No. 557,642, filed April 26, 1910.

The object of this invention is to provide means for insuring that the throat will be returned to position: in the line of drive; to

provide means for guiding the picker;'and

tofprovide means for preventing the nails from clogging in the chute.

In the accompanying drawings forming part of thisspecification, in which like numbers of reference denote like parts wherever they occur, Figure 1 is a top plan view of a nailing machine; Fig. 2 is a front elevation of same; Fig. 3 is aside elevation of same;-

Fig. 4 is a sectional View on the line 4 4, Fig. 3; Fig. 5 is a fragmentary sectional view .showing the junction of the nail-chute with the nail guide; Fig. 6 is an interior view of fhG COVQI for the nail-containing receptacle; Fig. 7 is a perspective view on an enlarged scale, of the nail-chute and the nail picker attached thereto Fig. 8 is a perspec-. 'tive view, on an enlarged scale, oft'he nail.

picker;,and Fig. 9 is a perspective view, on

an enlarged scale, of the support-for the nail picker. i

The drive shaft 1 is journaled in. a casting or frame 2, and receives its pgwer from any suitable source, saidcasting on a suitable base or standard 3. A rod or driver bar, 4 preferably extends vertically through openings in lugs 5and 6 and is adapted to reciprocate therein, said lu'gs be: ing preferably formed integrally with casting 2 and projecting from the front of same. Ahead or enlargement 7 is formed on the upper end of a rod or driver bar 4 and contains a depression 8 that forms a seat for the lower end of a pin-9. The upper end of said pin 9 seats in a depression 10 in member 11 borne by shaft 12, said shaft being journaled in bracket 13 borne by casting 2. A spring 14 is coiled around shaft 12 and is arranged to exert its pressure upon member 11 and thereby causesaid member to press downing supported wardly upon pin 9 into depression 8 in head 7 so that, when rod 4 is raised in the manner herelnafter described, said rod rocks member 11 upwardly until some is released,

whereby member 11 causes said rod to drop under the pressure of spring 14. Leather washers 15, or the like, are,interposed betweenthe head 7 of rod 4 and the top of lug 5 in order to lessen the noise, when said rod reaches the end of its downward stroke. The shaft 1 projects beyond the front of casting 2 and bears a cam 16. A collar or member 17 is secured to red 4 by means of a set-screw 18 and is disposed in the path of rotation of cam 16. The cam 16 is arranged so that, when shaft 1 is rotatedcounterclockwise, Fig. 2, the rounded end 19 of said cam en ages and raises collar 17, with the result that rod 4 isforced upwardly and is held in' its raised position until the corner 20 moves from beneath collar 17, whereby said rod is free to drop under the ressure of spring 14, as hereinabove descri d. A, steel hammer or driver 21 is secured to the lower end of rod 4 by set-screw 22 or other suitable means. A nail guide or throat 23 is pivoted at 24 to casting 2 and contains a groove 25, which forms a driver passage and is arranged to aline with driver 21 in order to allow said driver to pass therethrou h, when same descends in the manner hereinabove described.

An -inclined nail-chute or raceway 26 is pivotally connected at its lower end to nail guide 23 by means ofa screw 27, or the like, and contains a groove or driver passage 28 which registers with the groove 25 in nailchute 23 in order to deliver the nails to same. The groove 28 extends longitudinally in chute 26. and is formed relatively narrow and deep so as to allow the heads of the 1 nails 29 to rest upon the upper edges of same and, also, to allow the bodies" of the nails to hang substantially vertical in said groove, as depicted in Fig. 5. The upper 1 end .of chute 26 extends through an o ening 30 in an open-ended nail hopper 31 0 a nail loader and rests and slides upon shaft 32 that extends through the interior of saidnail hopper, said hopper having an opening 105 33 in the upper part thereof to allow nails to be placed into same. Shaft supports hopper 31,'and is journaled in lugs 34 borne by bracket 35'that is secured to castlng 2 by a screw 36 or' other suitable means. A gear 110 37 borne by shaft 32 is driven by gear 38 on shaft 39, said shaft 39 being journaled in lug 4O borne by bracket 35. A pulley 41 is mounted on shaft 39 and is driven by belt 42 which receives its power from-pulley 13 on drive shaft 1. A cup-shaped receptacle 414 is secured to shaft 32 and bears a plurality of paddles 45 that project inwardly from the inner surface thereof. As the rc-- ceptacle 44 rotates the paddles 4-5 raise the nails 29 in said receptacle and discharge same upon an inclined chute or plate 46 which is secured to hopper 31 by means of a bolt or screw 47.

' Chute 46 is arranged to discharge the nails' 29 into a depression .48 in nail-chute 26, said depression being arranged to guide said nails into the upper end of groove 28 in said chute 26. .The nails 29 that enter groove 28 assume an upright position, as hereinabove described, and move downwardly toward the nail guide 23. A spring 49 is secured to the inner wall of hopper 31 and is arranged to bear upon the upper face of the chute, and its function is to prevent clogging of the nails as hereinafter described. A plate or cover 50 is fastened to nail-chute 26 by means of brackets 50", or the like, and is arranged to extend longitudinally over and adjacent to groove 28. Said plate preferably extends from the hopper to the lower end of groove 28 and retains the nails'29 in said groove. The lower-end of'plate 50 is arranged to engage the head of the first nail 29 in the lower end'ofgroove 28, so as to prevent the pressure of the other nails 29in groove 28 from forcingthe first nail out of said groove, and is somewhat resilient in order-to allow the first nail to be forced into groove 25 in nail guide 23 in the manner about to be described.

A picker guide '51 is secured to the lower part of nail-chute 26 by'means of a flange portion 51 and. contains a groove 52 which preferably extends'substantially at a rightangle to the groove 28 insaid nail-chute. A nail picker or plate 53 is adapted to reciprocate longitudinally in groove 52 and is provided witlha beveled point 54. A pair of, tongues 55, or the like, projects from the lower end of nail-chute 26 into an elongated notch 56 in the point 54 and guides the nail picker 53. The picker 53 is arranged to move across the.lower end of groove 28 so that the beveled point 54 moves between the first and second nails 29 at the bottom of groove 28 and thereby not only separates the first nail from the other nails in groove 28, but forces the first nail into groove 25 in nail guide 23. Said picker 53 is actuated by means of a lever 57 which is pivoted at 58 to casting-T21 One end of lever 57 bears a pin 59, which extends through a slot 60 in member 51 and, also, loosely through an 45 aperture 61 in picker 53, and the other end of said lever bears a roller 62 which is a (lapted to ride upon a cam surface 63 of member 64 borne by drive shaft 1, said picker being capable of reciprocating on pin 59. A spring 65 is attached to casling2 by means of a screw or bolt 66 and is arranged to exert its pressure-against a pin 67 borne by lever 57 in order to hold roller 62 into engagement with cam surface 63 of member 6th When roller 62 ridc's'from the high side of cam surface 63 to the low side thereof, the lever 57 rotates clockwise, Fig. 3, and thereby moves picker 53 forwardly, with the result that the beveled point 54 moves across the lower end of groove 28, so as to separate the first nail 29 from the second hail ingroove 28 and, also, to force the first nail 29 into the groove 25 in nail guide 23. As the roller 62 rides from the low side to the high side of cam surface 63, the lever 57 rocks counter-clockwise, Fig. 3, and thereby moves picker 53 rearwardly so as to move the beveled point 54 away from the groove 28,whereby the downward pressure ofthe nails 29 in groove 28 force the second nail into engagement with the lower end of plate 50 so that same occupies the position previously occupied by the first nail in order to be forced into groove 25, when said picker again moves forwardly as just described. Member 64 is so arranged relative to cam 16 that when driver 21 is raised the roller 62 rides upon the low side of cam surface 63 in order to force a nail 29 into groove 25, as hereinabove described. but when the driver 21 is lowered the roller 62 rides upon the high side of cam surface 63 so as to move the beveled point 51 of picker 55 away from the groove 28, thereby allowing the nails to descend in said groove.

A lug 68 borne by casting 2 contains an opening69 through which a pin 7 0 extends. A spring 71 is arranged to press the head of said, pinv against one side of nail-guide 23 and thereby tends to rotate said nail-guide counter-clockwise, Fig. 2, in order to hold said nail-guide in position to allow groove 25 to receive driver 21, when the latter descends. The lower end of lever 57 normally engages one side of member 51 -ani7l, as said member is secured to nail-chute 2G and said nail-chute is attached to nail-guide 23, the end of said lever limits the movement of nail-guidef23 toward the right, Fig. 3 and locates it in position under the. driver. A lever 72 is pivoted at 73 to bracket 35, and affords a means for positively returning and holding nailguide 23 in position to allow groove25 to receive driver 21, when same descends. A bolt 74 extends through a screw-threaded opening in one end of lever 72 and bears a lock-nut 75, which affords a means for adjusting said bolt. A roller 76 is attached to the other end of lever 72 and extends through an opening in wall 77 of a depression 78 in casting 2 in order to ride upon cam 16 whlle the driver 21 descends.

The head of bolt 74 engages the end of pin.

70 and, when roller 76 rides upon cam 16, said cam tends to rotate lever 72 counterclockwise, Fig. 2, with the result that said bolt presses against the end of pin 70 so as end 10 of cam 16 engages said roller before the corner 20 of said cam releases the collar 17 in the manner hereinabove described, and,

also, so that the corner 20 of said cam moves out of engagement with said roller-before nail-guide 23 is rocked toward the left, Fig. 2, in the manner hereinafter described.

While (11'1"81 21 is held in a raised position,

the nail-guide 23 is rocked toward the left, Fig. 2, in the manner about to be described, and after a nail 29 has been deposited into groove 25, said guide is returned to its norlnal position by the pressure of spring 71 and lever 72 as just described.

A lever 79 is pivoted at 80 to casting 2 and bears a roller 81 which rides in a cam groove 82 in member 64. The prongs 83 of a bifurcated end of lever 79 hold a sleeve 84 upon a pin 85 borne by an arm of bellcrank awl carrier 86, said sleeve being capable of rotating and reciprocating upon said pin. The axle or gudgeon 87 of bell'crank 86 extends into an opening 88 in lug 89 borne by casting 2, and is capable of reciprocating and rotating in said opening. A

. sprlng 90 is arranged in opening 88 so as to exert its pressure against the end of gudgeon 87 and thereby tends to force said gudgeon and bell-crank 86 toward the right, Fig. 2. A lever 91 is loosely mounted on a pin 92 that connects a pair of lugs 93 borne by casting 2. One end of lever91 bears a roller 94 which projects into the path of travel of the high side of cam surface 95 borne by member 64. A bolt 96 is attached to the otherend of lever 91 that is arranged 'to eX- tend adjacent a boss 97 borne by bell-crank 86. .The pressure of spring 90. holds boss 97 of bell-crank 86 in engagement with the head of bolt 96 and thereby tends to rotate lever 91 clockwise, Fig. 4, so as to hold roller 94 in the path of rotation of the high side of cam surface 95. A screw 98 extends through a screw-threaded opening in lever 01 and bears a lock-nut 90' which affords a means for holding same firmly in said opening. An end of screw 98 bears againstja boss 100 borne by casting 2 and thereby limits the movement of roller 94 toward the cam surface 95. arranged relative to cam 16 that, while said .cam 16 raises driver 21, the high side of cam surface 95 engages the roller 94 and thereby rocks lever 01 clockwise, Fig. 2,

The cam surface 9 is so whereby said lever forces bell-crank 86 toward the, left for the purpose hereinafter described. By means of screw 98 the roller 94 can be adjusted relative to the high side of cam surface 95in order toiricrease or diminish the movement of lever 91 and thereby increase or diminish the movementof bell-crank 86.

One arm of the bell-crank awl carrier 86 bearsa member 101, which extends beneath nail-guide 23 and above a foot plate 1'02 that is secured to the'casting 2. An awl 103 projects from member 101 into a. slot 104 in plate 102, said slot being arranged to register with the bottom of groove 25 in order to allow hammer 23 to pass therethrough,

when same descends An anvil 105 is located beneath groove 25 and slot 104, and not only supports the leather or shoe to be nailed but clenches the points of the nails 29, when said nails are driven through the leather. Part of cam groove 82 extends adjacent the front end of member 64 and another part extends near the rear end of said member. WVhen roller 81 rides from the front side of cam groove 82' into the rear part of same, the-bell-crank 86 is rocked counter-clockwise, Fig. 3, with the result that awl 103 is caused to project from slot 104 into the leather upon anvil 105. VYhile the roller 81 rides in the rear part of cam groove 82 the high side of cam surface 95 engages roller 94 and thereby moves the bell-crank 86 toward the left, Fig. 2, as hereinabove described. The awl 103 remains in the leather until bell-crank 86 reaches the end of its movement toward the left as just described, and thereby feeds the leather in the same direction. After bel'Lcrank 86 reaches theend of its movement toward the left, roller 81 rides intothejront part of cam groove 82 and thereby rocks sald-bell crank clockwise, Fi 3, 'so as towithdraw the; awl 103 from he leather. When bellcrank 86 moves-toward the. left as hereinabove described, member 101 en es one side of nail-guide 23 and rocks 331dnailguide toward the left until the awl 103 reaches av position in vertical alinement with from the leather and a nail 29 has'been deposited into groove 25 in the manner hereinabove described, the roller 94 rides out of engagement with the high side of cam surface 95 so as to allowspring to return bell-crank 86 to its normal position and,

lever 72 to realso, to allow spring 71 and turn the nail-guide 23 to its initial position before the driver 21 is released to descend. The nail guide is arrested in position with the driver passage in alinelnent with the driver by engagement of the picker guide.

(attached to the chute and to the nail guide) with the end of picker lever 57. By means of screw 98, the movement of .bell-crank 86 can be regulated so that the nails 29 can be driven at any desired distance apart from each other. A guide 106 that is adjustable by a lever 107 or other suitable means projects below plate 102 and regulates the spacing of nails 29 from the edge of the leather.

The operation of the machine is as follows: Power is applied to shaft 1 so that same rotatescounter-clockwise, Fig. 2, and thereby revolves cam 16 and member 6 1 in the same direction. As cam 16 revolves, its

' rounded end 19 engages and lifts collar 17 which in turn raises rod 4- and driver 21. After driver 21 reaches the end ofits upward stroke, collar 17 rides upon cam 16,,

- by awl 103 moves the leather in the same direction, as hereinabove described, and member 101 rocks the nail-guide 23 toward the left. lVhen nail-guide 23 is rocked, as just described, roller 62 rides upon the low side of cam surface 63 so as to rock lever 57 clockwise, Fig. 3, and thereby move nail picker 53 forwardly, whereby the beveled -point- 54 of said nail picker forces a nail 29 into groove 25 in the manner hcrcinabove described. After the bell-crank 86 reaches the ends of its movement toward the 'left" and roller 81 rides into the front side of cam groove 82 so as to rock said bell-crank clockwise. Fig. 3,

, and thereby withdraw and 103 from the leather, the high side of cam surface 95 moves out of engagement with roller 94 so. as to allow spring 90 to return said bell-crank'to its normal posi-- tion. When said bell-crank returns to its normal position, the spring 7:1 returns nailguide 23 to its initial positlon into ahnement with the driver where it is arrested by the picker, lever above described. The cam-.16 engages roller 76, whereby lever 72 positively returns said nail-guide. in its initial position to allow the driver 23 to de sccnd into groove 25, when the corner 20 of cam 16 releases collar 17. Driver 21 then drops upon the nail 29 in groove 25 and drives said nail into the leather upon anvil 105, which clenches the point of same.

The driver 21 is then raised and the leather vfed toward the left, Fig. 2, ashereinabove described, in order to allow the next nail 29 that is depositedinto groove'95 to be driven into the leather-, when said driver again descends.

It will therefore be seen that the nail guide or throat is moved in one direction by the awl mechanism and is returned by means of spring 71, and that additional means are provided for insuring the return of the nail guide. The driver cam operates to positively return the nail guide if it should happen to stick, and this positive return is accomplished before the driver is released. Means are therefore provided'for moving the nail guide positively in both directions;

During the operation of the machine the nail chute reciprocates in the hopper and the end of the cover 50 will in the movement of the chute rapidly. engage and disengage the yielding member or flat leaf spring 40. The rounded end of this spring will thus ride .upon the end of the cover and snap' back as this end recedes with the ob e. The function of the spring is that of a clearer to clear the .chute of nails improperly positioned thereon. -If any nails become lodged crosswise of thechute, or if they hang. by their heads from the end 'of the cover they will be knocked off by the clearer.

I claim:

1. In a nailing machine the combination of a support, a reci n'ocating driver, a nail guide pivoted to said support and having .a groove to receive said driver, means for rocking said guide in one direction, a cam adapted to actuate said driver, and means actuated by said cam adapted ,to return said nail guide to its normal position.

2. In a nailing machine, the combination .of a' support, a reciprocating driver, a nail guide pivoted to said support and having a groove to receive said driver, means for rocking said guide in one direction, a cam adapted to actuate said driver, means for returning said guide to its normal position comprising a plunger, a spring adapted to press said plunger against one side of said nail guide, and a pivoted member actuated by said cam and adapted to hold said plunger against said nail guide, when said cam releases said driver.

3. In a nailing machine, the combination of a support, a nail-chute, a nail guide provided with a groove, a reciprocating picker adapted to feed the nails successively from said chute into said groove, means for rocking said guide in one direction, a reciproeating driver operating in said groove, a cam for actuating said driver, and means actuated by said cam for returning said guide to its normal position.

41. In a nailing machine, the combination of a support, a nail chute, a nail guide provided with a groove, a reciprocating picker adapted to feed the nails successively from said chute into said groove, means for rocking said guide in one direction, a reciprocating driver operating in said "groove,

means for actuating said'driver, and means with a support and a driver thereon, of

in the opposite direction.

I the line of feed'and for positively returnguide and awl alternately under the driver .nail guide mounted on said support for operated by said actuating means for moving said nail guide 'in' the opposite direction.

5. In a nailing machine, the combination of a support, a nail-chute, a nail guide provided wlth a groove, a reciprocating picker adapted toremove a nail from said chute and force the same directly into said groove during each movement thereof in one. direction, means for moving'said guide in one direction, a reciprocating driver operating in said groove, meansfor actuating said driver, and means operated by .said actuating means for moving said nail guide in the opposite direction.

6. In a nailing machine, the combination with asupport and a driver thereon, of a nail guide mounted on said support for" movement. in the line of feed of the work, a nail chute movable with said guide and provided with means for feeding loose fasteners to the guide, independently supported awl mechanism, and means for moving said guide and said awl mechanism in ing said guide.

7. In a nailing machine, the combination with a support and a driver thereon, of a nail guide mounted on said support for movement in the line of feed of the work,'a nail chute movable with said guide and provided with means for feeding loose fasteners to the guide, independently supported awl mechanism including an awl movable in the line offeed, and. means for moving said constructed to positively actuate said guide in both directions,

8. In a nailing machine, the combination with a support and a driver thereon, of a nail guide mounted on said support for movement thereon, awl mechanism including an awlcarrier, operating means constructed to cause the awl carrier to engage and move the guide in one direction, and means for positively moving the guide in the opposite direction.

9. In a nailing machine, the combination a nail guide mounted on said support for movement thereon, awl mechanism, operat-x ing means constructed to cause the awl mechanism to engage and move the guide in one direction, and means for positively moving the guide in the opposite direction.

10. In a nailing machine, the combination with a support and a driverrthereon, of a movement thereon, awl mechanism, operating means constructed to cause the awl mechanism to engage and-'move the guide in one direction, and ieldingly and positively operated means or moving the guide 11'. In a nailing machine, the combination with a support, and a driver and a nail movable thereon,

loader thereon, ofa nail guide' m unted for transverse movement on said support, a

chute movable with said guide and: in said chute movable with said guide and in said loader, means for positively moving said uide'into and out of alineinent with said driver, and independently mounted and feed mechanism including an awl-movable into and out of alinement with said'driver.

13. In a'nailing machine,- the combination witha support and a driver thereon, of a nail guide having a driver passage therein anfilpivoted transversely on said support to saw g transversely ,thereon, and means for positively swinging said guide to move said driver passage into and out of alinement with said driver.

14. In a nailing machine, the combination with a support and a-driver thereon, of a nail guide pivoted-transversely on said support r transverse movement thereon,means for positively moving said guide into and outof alinementwith said driver, and independently mounted awl feed mechanism including an awl movable into and out of alinement with said driver.

15. In a nailing machine, the combination with a support and a driverthereon, of a nail guide mounted on said support for movement thereon into and out of alinement with the driver, a stop .for locating the guide in alinement with the driver, and operating means adapted to positively move said guide'into engagement with said stop. '16. In anailing machine, the combination with a support and a driver thereon, of a nail guide mounted on said support for movement thereon into and out of alinement with the driver, a stop for locating the guide in alinement with the driver, and operating means ada )ted to yieldingly and positively move sai guide into engegement with saidstop.

17. In a nailing machine, the combination with a stationary frame, a movable fastener chute thereon and a picker extending across said chute, of a picker guide secured to and extending from said chute, and an actuator on said frame and stationary with respectto said chute and guide able, connection with said picker.

18. In a nailing machine, the combination with a stationary frame, a fastener chute and apicker extending across said-chute, of, a picker guide secured to and extending from said chute, and an actuator mounted on said frame and having aslidilig connection with said picker. i

and having a mov- 19. In a nailing machine, the combination with a stationary frame, a movable fastener chute thereon and a picker extending across said chute, of a picker guide comprising a grooved member secured to and extending from said chute, said groove receiving said picker therein and supporting it laterally, and an actuator on said frame and having a pin thereon extending through a hole in said picker.

.20. In a nailing machine, the combination with a support and a driver thereon, of a nail guide mounted on said support for movement thereon into and out of alinementwith the driver, a picker .EO1.S2ll(l guide, and

a picker actuator adapted to form a stop to locate the guide in its position in alinement with the driver.

21. In a nailing machine, the combination with a support and a driver thereon, of a movable nail guide, and a cam having a cam surface for operating said driver and for moving said with said driver.

22. In a nailing machine, the combination with a support and a driver thereon, of a movable nail guide, means for moving said guide in timed relation guide into and out of alinement with said driver, and an actuator for said driver and for said guide operatively connected with said gulde and constructed to insure the movement of said guide into aiinement with said driver.

23. In a nailing machine, the combination with a support and a driver thereon, of a movable nail guide, awl mechanism adapted to move said guide in one direction, and an actuator for said driver constructed and arranged to move said guide inthe other direction.

Qet. In a nailing machine, the combination with a support and a driver thereon, of a' Ililll gu1de,movable into and out of ahnementwith said driver, awl mechanism adapted to move said guide 'out of alincment with said driver, and an actuator for said driver constructed and arranged to move'said guide into aliuement with said driver.

25. In a nailing machine, the'combination with a support and a driver thereon, of a movable nail guide, means for moving said guide into and out. of alinement with said driver, and additional means cotiperating with said first means constructed and arranged to insure the movement of said guide into alinen'icnt with said driver.

26. In a nailingmachine, the combination with a hopper and a nail chute movable therein, and having a cover extending into said hopper, of a yielding device secured to said hopper adapted to engage the end of said cover during the movements of said chute to clear the chute of misplaced nails.

27. In a nailing machine, the combination t;herein, and having a cover extcnding'into said hopper, of a curved leaf spring secured to said hopper and adapted to engage the end ,of said cover during the movement of said chute to clear the chute of misplaced nails.

Intestimony whereof I have hereunto affixed my signature in the presence of two witnesses.

STEPHEN A. DOBYNE.

lvitncsses Gmovs IVAL'roN, GEORGE Gr. ANDERSON.

flopies of this patent may beobt ained for five cents each, by addressing the Commissioner of Patent Washington, I). C." 

